The Black Donnellys will premiere Monday, March 5th at 10:00 pm ET/PT, in the timeslot currently occupied by Studio 60. Donnellys is a new drama from Crash collaborators Paul Haggis and Bobby Moresco, focusing on a group of young brothers who become wrapped up in a life of crime. The series stars Jonathan Tucker (The Texas Chainsaw Massacre) and Oliva Wilde (The O.C.).

The comedy Andy Barker, P.I. premieres Thursday, March 15th at 9:30 pm ET/PT, in 30 Rock's current timeslot. Barker stars Andy Richter and Tony Hale (Arrested Development), in the story of an accountant who becomes a private detective. The series reteams Richter with Conan O'Brien, who is the co-creator and executive producer.

As to when we'll see 30 Rock and Studio 60 again, NBC has already announced that 30 Rock will return to its usual Thursday, 9:30 timeslot on April 19th, after Andy Barker has finished its six episode first season. For that to work, presumably, they are planning on airing two episodes of Andy Barker during one night of its five week run.

However, NBC says the return date (and night of the week) for Studio 60's return is "to be determined." While both 30 Rock and Studio 60 have struggled in the ratings, 30 Rock has received increasingly positive reviews, and is coming off back to back Golden Globe and SAG Award wins for star Alec Baldwin.

The usually lauded Aaron Sorkin meanwhile has dealt with a rather tepid critical response to Studio 60. If The Black Donnellys is deemed successful enough to stay in the Monday, 10:00 pm timeslot for the entirety of its thirteen episode first season, it would not conclude until the end of May. This would mean that Studio 60 would need to find a new home, in order to return before the TV season ends.